Layout alignment fixes

Aligns properly the layout on the grid, getting rid of old 16px gutters in the layout blocks.

No impact at small breakpoints, this only fixes issues on wider viewports.

Fixes #1915 

![ ](http://s2.developerslife.ru/public/images/gifs/7b8abb78-2bb1-4fcb-9008-3bf55992d1e3.gif)